Pixel vs Zombies

[giscus[bot]]

Pixel vs Zombies

Build retro games using WebAssembly for a fantasy console

https://wasm4.org/play/pixelvszombies/

[jessehattabaugh]

Doesn't start when I tap "click here to start". I'm using Retroid Pocket 5 -> Rocknix -> EmulationStation -> RetroArch -> libretro WASM-4 core. No crash or anything; the button changes color indicating that the tap is registering.

[VitorLorencone]

Thank you and sorry for taking so long. Could it be that the "click" wasn’t working? The button color changes when the "cursor" hovers over it, not only when clicked. When you try other WASM-4 games, do the mouse click functions work correctly? If so, could you provide an example of a game?

The way click detection works in the start game button is

mouse = *MOUSE_BUTTONS;
ctx.input.pressedLeftMouse = (mouse & (mouse ^ previousMouse)) & MOUSE_LEFT;

[...]

    // Button rectangle absolute position
    if(inRect(ctx.input.pos, Rect(42, 120, 76, 10))){

        // changing colors
        startSprite.colors = 0x240;

        // pressed "mouse"
        if(ctx.input.pressedLeftMouse){
            ctx.scene = Scene(++ctx.currentLevel);
            createLevel1(ctx);
        }
    }else{
        startSprite.colors = 0x140;
    }

So, if it’s working in other games, I can only guess it’s an interface issue or something related (maybe??)

[jessehattabaugh]

Sorry for taking even longer to get back to you! 😆

I think I figured out the problem; I need to touch and hold on the screen for a second or two before the click registers. Doing this I can get the game to start, and then if I touch and hold on the menu items and the playfield I can manage to plant seeds and pickup sundrops. It's hit or miss. Maybe there's something interfering with the mouse events, or maybe there's some lag with the WASM core and touchscreen events.

Would be nice to have directional pad input, but I'm sure that's on your roadmap.